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Micromeritics GeoPyc 1365 Envelope Density Analyzer

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GeoPyc 1365 Envelope Density Analyzer

The GeoPyc employs a unique displacement measurement technique that uses Dry Flo, a quasi-fluid composed of small, rigid spheres having a high degree of flow-ability. The sample is placed in a bed of Dry Flo which is agitated and gently consolidated about the sample. The GeoPyc collects the displacement data, performs the calculations, and displays or prints the results.

Features

  • Highly accurate and reproducible results     
  • Fast operation in a small bench-top instrument     
  • Fully automated data acquisition and reporting     
  • Nondestructive analysis maintains sample integrity     
  • Intelligent touch panel for ease of operation and reporting     
         
    The Technique:     
    The GeoPyc automatically determines the volume and density of a solid object by displacement of Dry Flo, a solid medium. The medium is a narrow distribution of small, rigid spheres that have a high degree of flow ability and achieve close packing around the object under investigation. The particles are sufficiently small that during consolidation they conform closely to the surface of the object, yet do not invade pore space.     
         
    Repeatability and reproducibility are achieved by a controlled method of compaction. The sample cell in which the dry medium is placed is a precision cylinder. A plunger compresses the powder as the cell vibrates; the force of compression is selectable and, therefore repeatable from test to test. A preliminary compaction with only the displacement medium in the cell establishes a zero-volume baseline.     
         
    The sample is then placed in the cylinder with the dry medium and the compaction process is repeated. The difference in the distance ht the piston penetrates the cylinder during the test and the distance h0 it penetrates during the baseline procedure (h= h0 – ht) is used to calculate the displacement volume of the medium using the formula for the volume of a cylinder of height h, V= Π r2h
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    Micromeritics was the first company to market commercially automated surface area, mercury penetration, and sedimentation particle size analyzers. Micromeritics...

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